Chuck.



C. F. BEAM.

CHUCK.

APPLICATION FILED JUNI; 1a, 1912.

1,063,21 Patented June 3,'1913.

CDLUMBM PLANDGRAPH Co.. WASHINGTON. n. c.

CHARLES FRANKLIN BEAM, OF LANSING, MICHIGAN.

CHUCK.

Specification of Letters Patent.

Patented J une 3, 1913.

Application filed June 18, 1912. Serial No. 704,280.

To all 'whom 25 may concern.'

Be it known that I, CHARLES FRANKLIN BEAM, a citizen of the UnitedStates, residing at the city of Lansing, county of Ingham, and State ofMichigan, have invented cert-ain new and useful Improvements in Chucks,of which the following is a specication.

This invention relates to improvements in chucks.

The main objects of this invention are,- first, to provide an improvedchuck which permits or enables the changing of tools while the spindleis being rotated. Second, to provide an improved chuck having theseadvantages, which is capable of manipulation with one hand. Third, toprovide an improved chuck which is simple and inexpensive in structure.

Further objects, and objects relating to structural details, willdenitely appear from the detailed description to follow.

I accomplish the objects of my invention by the devices and meansdescribed in the following specification.

The invention is clearly defined and pointed out in the claims.

A structure which is a preferred embodiment of my invention is clearlyillustrated in the accompanying drawing, forming a part of thisspecification, in which:

Figure I is a side view of my improved chuck. Fig. II is a perspectiveview of the locking sleeve 10. Fig. III is a side elevation of the toolholder 7, with the spring 14 thereon. Fig. IV is a perspective view ofthe body 1. Fig. V is a view partially in longitudinal section on a linecorresponding to line 5-5 of Fig. I. Fig. VI is a cross section taken ona line corresponding to line 6-6 of Fig. V. Fig. VII is a cross sectionon a line corresponding to line 7 7 of Fig. V. Fig. VIII is a crosssection on a line corresponding to line 8-8 of Fig. V.

Referring to the drawing, the body 1 of my improved chuck is providedwith a tapered shank 2 adapted to fit the socket of an ordinary drillspindle, not shown. 'Ihe body 1 in the structure illustrated, is formedof two pieces for convenience in manufacture.

The body is provided with a cylindrical socket 3 having a squareddriving portion ,4 at its inner end and an enlargement 5 at its outerend, there being an annular collar shoulder 6 at the inner end of theenlargement.

The tool holder 7 is provided with a squared driving portion S at itsinner end adapted to coact with the driving portion 4 of the bodysocket. The tool holder is provided with a collar 9 adapted to engagewith the shoulder 6 when the holder is inserted in the body.

A locking sleeve 10 is mounted upon the body, the sleeve being providedwith an annular internal groove 11 and a slot 12. A stop pin 13 on theholder engages this slot to limit the rotative movement of the sleeve onthe holder. A spring 14 is arranged within the groove 11 with one end ofthe spring connected to the stop 13, the other being connected to thesleeve at 14. This spring acts to hold the sleeve with one end of itsslot in engagement with the stop pin 13.

The sleeve is provided with spaced cam lugs 15 at its inner end and thebody with coacting spaced lugs 16 at its outer end. The spaces betweenthe lugs 16 are adapted to receivethe lugs 15 when presented endwisethereto.

In inserting the holder in the chuck body, the holder is pushed into thebody socket and the locking sleeve turned rearwardly until the lugs 15slip between the lugs 16 of the body. The locking sleeve is thenreleased and the spring acts to force the lugs into their engagingposition. If the chuck is rotating when the drill is inserted, it isonlyT necessary to hold the locking sleeve and push inwardly thereon,the rotation of the holder bringing Vthe lugs into engaging position.

To remove the tool holder, it is only necessary when the spindle isrotating, to grasp the sleeve and pull out thereon. It will be obviousthat this is a one hand operation which is a very great convenience froman operating point.

A further advantage of the structure', is, that the changes can be madewithout the liability of injury to the workman.

My improved chuck is simple and economical in structure and is notlikely to get out of repair in use.

I have illustrated and described my improved chuck in detail in the formpreferred by me and have not attempted to illustrate or describe thevarious modifications which I contemplate as such modifications will nodoubt be readily understood by those skilled in the art to which thisinvention relates. I desire, however, to be understood as claiming myimprovements speciiically in the form illustrated as well as broadlywithin the scope of the appended claims.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent is:

l. In a chuck, the combination of, a bo-dy having a cylindrical socketwith a squared driving portion at its inner end and an enlargement atits outer end, there being an annular collar shoulder at the inner endof the enlargement; a tool holder having a squared portion at its innerend adapted to coact with the squared portion of said body socket and acollar adapted to engage said shoulder at the inner end of saidenlargement of said socket; a sleeve having an internal annular grooveand a slot therein mounted on said holder; a stop pin on said holderengaging said slot of said sleeve to limit the movement of the sleeve onthe holder; spaced cam lugs on the inner end of said sleeve; spacedcoacting lugs on said body; and a coiled spring arranged in said grooveof said sleeve, one end of said spring being connected to said stop, theother being connected to said sleeve whereby the sleeve is automaticallyactuated by the spring to engage and retain said lugs in their engagingposition.

2. In a chuck, the combination of, a body having a cylindrical socketwith a squared driving port-ion at its inner end and an enlargement atits outer end; a tool holder having a squared portion at its inner endadapted to coact with the squared portion of said body socket; a sleevehaving an internal annular groove and a slot therein mounted on saidholder; a stop pin on said holder engaging said slot of said sleeve tolimit the movement of the sleeve on the holder; spaced cam lugs on theinner end of said sleeve; spaced coacting lugs on said body; and acoiled spring arranged in said groove of said sleeve, one end of saidspring being connected to said stop, the other being connected to saidsleeve whereby the sleeve is automatically actuated by the spring toengage and retain said lugs in their engaging position.

3. In a chuck, the combination of, a body having a cylindrical socketwith a squared driving portion at its inner end and an enlargement atits outer end, there being an annular collar shoulder at the innerend ofthe enlargement; a tool holder having a squared portion at its inner`end adapted to coact with the squared portion of said body socket and acollar adapted to engage said shoulder at the inner end of saidenlargement of said socket; a sleeve mounted on said holder; a stop forlimiting the rotative movement of the sleeve on the holder; spaced lugson said sleeve; spaced coacting lugs on said body; and a spring arrangedto act on said sleeve to engage and retain said lugs in their engagingposition.

4. In a chuck, the combination of, a body having a cylindrical socketwith a squared driving portion at its inner end and an enlargement atits outer end; a tool holder having a squared portion at its inner endadapted to coact with the squared portion of said body socket; a sleevemounted on said holder; a stop for limiting the rotative movement of thesleeve on the holder; spaced lugs on said sleeve; spaced coacting lugson said body; and a spring arranged to act on said sleeve to engage andretain said lugs in their engaging position. V

5. In a chuck7 the combination of, a body having a socket therein; atool holder adapted to be inserted into said socket and having drivingengagement with said body; a sleeve mounted on said holder for limitedrotative movement thereon; spaced cam lugs on said sleeve; spacedcoacting lugs on said body; and a spring arranged to act on said sleeveto engage said lugs and retain them in their engaging position.

6. In a. chuck; the combination of a body having a socket therein; atool holder adapted to be inserted in said socket and provided with adriving tang; a securing sleeve for said holder mounted for limitedrotative movement thereon, said sleeve and body being provided withcoacting engaging members; and a spring arranged to act on said sleeveto hold it yieldingly at the forward end of its movement, said engagingmem-V bers on said sleeve and body being disposed so that they may bebrought into engaging relation by the rearward rotation of said sleevewith saidholder tang in driving engagement with said socket.

7 In a chuck, the combination of a body having a socket therein; a toolholder adapted to be inserted in said socket and provided with a drivingtang; a securing sleeve for said holder mounted for limited rotativemovement thereon, said sleeve and body being provided with coactingengaging members, said engaging members on said sleeve andbody beingdisposed so that they may be brought into engaging relation by therearward rotation of said sleeve with said holder tang in drivingengagement with said socket.

8. In a chuck, the combination of a body having a socket therein; a toolholder adapted to be inserted into said socket and having drivingengagement with said body; a

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sleeve mounted on said holder for limited In Witness whereof I havehereunto set rotative movement thereon, and a spring army hand and sealn the presence of two Witranged to act on said sleeve to hold ityeldnesses.

ngly at one end of its movement; and ooact- CHARLES FRANKLIN BEAM, [LS,] ing engaging members on said sleeve and Witnesses:

body adapted to be engaged when the sleeve RALPH JOHN BUDD,

is actuated by the tension of said spring. FRED. CARLTON SMITH.

Copies of this patent may be obtained for ve cents each, by addressingthe Commissioner of Patents, Washington, D. G.

